The full title is "The British Isles (Junior)" . I have Volume 3 First edition May 1933 reprinted August 1933. There is no reference to any other volumes.

Edited by Marion I. Newbiggin D.SC (Lond) F.R.G.S
Author Allan Murray B.A. Lecturer in Geography Stranmillis Training College, Belfast

The book is an orange hard cover approx 140mmw x 192 high and the last page is numbered 223.

Contents are...
The Homeland
Plans and Maps
The Weather
The Coasts and Fishermen
The Highlands and Plains
The Rivers and the Lakes
The Farmers and Shepherds
The Miners
The Workers in Iron and Steel
The Shipbuilders
The Workers in Cotton and Wool
The Other Workers
London, The Capital
The Great Cities of Scotland and Ireland
The Cities and Towns of England and Wales
The Holiday Places
The British Isles
The Rest of the World and Ourselves
Questions and Exercises